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Fishery Bulletin 104(2) 



PCL. In between those lengths, however, the deviation 

 from mean sample length-at-age increased to 16.5 cm 

 (Fig. 5B). (The larger deviations for males were likely 

 the result of the small sample size.) Lee's phenomenon 

 did not occur in either sex with the quadratic-modified 

 Dahl-Lea method. 



Of the 64 female salmon shark reproductive tracts 

 examined, 55 were fully mature, and 11 of the 14 males 

 examined were mature. Mature female reproductive 



tracts consisted of a well-developed right ovary (the 

 only functional ovary in lamniform sharks) containing 

 various sizes of ova, large oviducts and oviducal glands, 

 and expanded, heavily striated uteri with thickened 

 walls. In stark contrast, the right ovary from immature 

 female reproductive tracts was considerably smaller 

 and had no signs of developing ova, the oviducal gland 

 was virtually indistinguishable from the oviduct, and 

 the uteri were extremely small, thin-walled, flaccid and 

 completely smooth. Additionally, the epigonal 

 organ in mature females was large and ex- 

 tended '-/,3 the length of the uteri, whereas in 

 immature females it was small and generally 

 did not extend much past the anterior end of 

 the uteri. No females examined were of an 

 "intermediate'Veproductive nature. Mature 

 male reproductive tracts consisted of large 

 well-developed testes, a thick epididymis lead- 

 ing to a coiled ductus deferens, rigid (fully cal- 

 cified) claspers and well-developed siphon sacs. 

 Immature male reproductive tracts consisted 

 of small testes that were partially embedded 

 in the epigonal organ, thin epididymis and 

 straight ductus deferens, nonrigid claspers 

 and poorly developed siphon sacs. 



Estimated median precaudal length-at- 

 maturity (MPCL) for ENP female and male 

 salmon sharks were 164.7 cm PCL and 124.0 

 cm PCL, respectively (Fig. 6). The smallest 

 mature female observed was 164.0 cm PCL, 

 and the largest immature female observed 

 was 176.5 cm PCL (however, all other im- 

 mature females were sl63 cm PCL). None of 



